What is the single hardest question they ask you when interviewing at Google?

“What number comes next in this sequence: 10, 9, 60, 90, 70, 66…?”

This question is hard because you either see the “trick” or you don’t. Nothing you learned in school is likely to help. Try spelling out the numbers—you’ll see that they are in order of the number of letters in the word. “Sixty-six” has eight letters, so the next number must have nine. One possible answer is “ninety-six.”

Poundstone goes on to explain what Google is looking for in interview answers and the type of people, extremely bright extroverts, that Google wants. Your thought process is just as important as your answer. Read the whole article and see if you might fit in.